How to design more efficient hole-transporting materials for perovskite solar cells? Rational tailoring of the triphenylamine-based electron donor

Nanoscale ◽  
2018 ◽  
Vol 10 (43) ◽  
pp. 20329-20338 ◽  
Author(s):  
Yu-Lin Xu ◽  
Wei-Lu Ding ◽  
Zhu-Zhu Sun
Keyword(s):  
Solar Cells ◽  
Electron Donor ◽  
Perovskite Solar Cells ◽  
Hole Mobility ◽  
Hole Transporting ◽  
Hole Transporting Materials

Continuously adjustable HOMO levels and high hole mobility are obtained by the structural tailoring of auxiliary TPA-donors.

Ladder-like conjugated polymers used as hole-transporting materials for high-efficiency perovskite solar cells

2019 ◽  
Vol 7 (24) ◽  
pp. 14473-14477 ◽  
Author(s):  
Liren Zhang ◽  
Jionghua Wu ◽  
Dongmei Li ◽  
Wenhua Li ◽  
Qingbo Meng ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Level ◽  
Conjugated Polymers ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Hole Mobility ◽  
Homo Energy ◽  
Hole Transporting ◽  
Hole Transporting Materials ◽  
Homo Energy Level

Intramolecular S–O interactions were adopted for designing HTMs with high hole mobility and a suitable HOMO energy level in PVSK.

Interfacial and bulk properties of hole transporting materials in perovskite solar cells: spiro-MeTAD versus spiro-OMeTAD

2020 ◽  
Vol 8 (17) ◽  
pp. 8527-8539
Author(s):  
Xavier Sallenave ◽  
Mona Shasti ◽  
Elham Halvani Anaraki ◽  
Dmytro Volyniuk ◽  
Juozas Vidas Grazulevicius ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Hole Mobility ◽  
Interface Properties ◽  
Bulk Properties ◽  
Hole Transporting ◽  
Hole Transporting Materials

Improving perovskite–HTM interface properties in solar cells is more important than just improving HTM hole mobility.

scholarly journals Dopant-Free Triazatruxene-Based Hole Transporting Materials with Three Different End-Capped Acceptor Units for Perovskite Solar Cells

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 936
Author(s):  
Da Rim Kil ◽  
Chunyuan Lu ◽  
Jung-Min Ji ◽  
Chul Hoon Kim ◽  
Hwan Kyu Kim
Keyword(s):  
Solar Cells ◽  
Energy Levels ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Hole Mobility ◽  
Molecular Engineering ◽  
Structural Hole ◽  
Highest Occupied Molecular Orbital ◽  
Hole Transporting ◽  
Hole Transporting Materials

A series of dopant-free D-π-A structural hole-transporting materials (HTMs), named as SGT-460, SGT-461, and SGT-462, incorporating a planner-type triazatruxene (TAT) core, thieno[3,2-b]indole (TI) π-bridge and three different acceptors, 3-ethylthiazolidine-2,4-dione (ED), 3-(dicyano methylidene)indan-1-one (DI), and malononitrile (MN), were designed and synthesized for application in perovskite solar cells (PrSCs). The effect of three acceptor units in star-shaped D-π-A structured dopant-free HTMs on the photophysical and electrochemical properties and the photovoltaic performance were investigated compared to the reference HTM of 2,2′,7,7′-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9′-spirobifluorene (spiro-OMeTAD). Their highest occupied molecular orbital (HOMO) energy levels were positioned for efficient hole extraction from a MAPbCl3−xIx layer (5.43 eV). The hole mobility values of the HTMs without dopants were determined to be 7.59 × 10−5 cm2 V−1 s−1, 5.13 × 10−4 cm2 V−1 s−1, and 7.61 × 10−4 cm2 V−1 s−1 for SGT-460-, SGT-461-, and SGT-462-based films. The glass transition temperature of all HTMs showed higher than that of the spiro-OMeTAD. As a result, the molecular engineering of a planer donor core, π-bridge, and end-capped acceptor led to good hole mobility, yielding 11.76% efficiency from SGT-462-based PrSCs, and it provides a useful insight into the synthesis of the next-generation of HTMs for PrSC application.

[2.2]Paracyclophane-based hole-transporting materials for perovskite solar cells

2021 ◽  
Vol 491 ◽  
pp. 229543
Author(s):  
Yin-Sheng Lin ◽  
Hsin Li ◽  
Wen-Sheng Yu ◽  
Szu-Tan Wang ◽  
Yi-Min Chang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Hole Transporting ◽  
Hole Transporting Materials

Stable Perovskite Solar Cells Using Molecularly Engineered Functionalized Oligothiophenes as Low‐Cost Hole‐Transporting Materials

Small ◽  
2021 ◽  
pp. 2100783
Author(s):  
Vellaichamy Joseph ◽  
Albertus Adrian Sutanto ◽  
Cansu Igci ◽  
Olga A. Syzgantseva ◽  
Vygintas Jankauskas ◽  
...  
Keyword(s):  
Solar Cells ◽  
Low Cost ◽  
Perovskite Solar Cells ◽  
Hole Transporting ◽  
Hole Transporting Materials

scholarly journals Dopant Engineering for Spiro‐OMeTAD Hole‐Transporting Materials towards Efficient Perovskite Solar Cells

2021 ◽  
pp. 2102124
Author(s):  
Ji‐Youn Seo ◽  
Seckin Akin ◽  
Michal Zalibera ◽  
Marco A. Ruiz Preciado ◽  
Hui‐Seon Kim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Hole Transporting ◽  
Hole Transporting Materials
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